Evaluation of atmospheric profiles derived from single- and zero-difference excess phase processing of BeiDou radio  occultation data from the FY-3C GNOS mission

Bai, Weihua; Liu, Congliang; Meng, Xiangguang; Sun, Yueqiang; Kirchengast, Gottfried; Du, Qifei; Wang, Xianyi; Yang, Guanglin; Liao, Mi; Yang, Zhongdong; Zhao, Danyang; Xia, Junming; Cai, Yuerong; Liu, Lijun; Wang, Dongwei

doi:https://doi.org/10.5194/amt-11-819-2018

Articles | Volume 11, issue 2

https://doi.org/10.5194/amt-11-819-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Observing Atmosphere and Climate with Occultation Techniques...

https://doi.org/10.5194/amt-11-819-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 2

Research article

|

13 Feb 2018

Research article |

| 13 Feb 2018

Evaluation of atmospheric profiles derived from single- and zero-difference excess phase processing of BeiDou radio occultation data from the FY-3C GNOS mission

Weihua Bai, Congliang Liu, Xiangguang Meng, Yueqiang Sun, Gottfried Kirchengast, Qifei Du, Xianyi Wang, Guanglin Yang, Mi Liao, Zhongdong Yang, Danyang Zhao, Junming Xia, Yuerong Cai, Lijun Liu, and Dongwei Wang

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Final revised paper (published on 13 Feb 2018)
Preprint (discussion started on 19 Jun 2017)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Comments on Bai et al.', Anonymous Referee #1, 07 Jul 2017
- AC1: 'Response to Anonymous Referee #1's comments', Congliang Liu, 13 Nov 2017
RC2: 'Review of amt-2017-177', Anonymous Referee #2, 11 Jul 2017
- AC2: 'Response to Anonymous Referee #2's comments', Congliang Liu, 13 Nov 2017
RC3: 'reviewer's comments w.r.t Bai et al manuscript', Anonymous Referee #3, 03 Aug 2017
- AC3: 'Response to Anonymous Referee #3's comments', Congliang Liu, 13 Nov 2017
RC4: 'Review of manuscript amt-2017-177', Anonymous Referee #4, 11 Aug 2017
- AC4: 'Response to Anonymous Referee #4's comments', Congliang Liu, 13 Nov 2017

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Congliang Liu on behalf of the Authors (13 Nov 2017) Author's response Manuscript

ED: Publish as is (20 Nov 2017) by Anthony Mannucci

AR by Congliang Liu on behalf of the Authors (30 Nov 2017)

Short summary

In this study we focus on evaluating zero-difference processing of BDS RO data vs. single-difference processing. From the statistics, average bias (and standard deviation) of the bending angle and refractivity profiles were found to be as small as about 0.05–0.2 % (and 0.7–1.6 %) over the upper troposphere and lower stratosphere, including for the GEO, IGSO, and MEO subsets. Zero differencing was found to perform slightly better, as may be expected from its lower vulnerability to noise.